@InProceedings{Egyed:2003:UML, author = "Alexander Egyed", title = "Compositional and Relational Reasoning during Class Abstraction", pages = "121--137", booktitle = "{UML} 2003 - The Unified Modeling Language. Model Languages and Applications. 6th International Conference, San Francisco, {CA}, {USA}, October 2003, Proceedings", editor = "Perdita Stevens and Jon Whittle and Grady Booch", publisher = "Springer", series = "LNCS", volume = "2863", year = "2003", }